Here's a Biab MultiRiff Demo (SGU+WAV)

https://www.dropbox.com/s/38y0puc0jfevrmf/Biab_MultiRiff_Demo.zip?dl=1

Just load the audio file in that you want the MultiRiff for.
With F5 on Bar 1 Mute each separate instrument but not the Audio track,
on the Bar you want the Riff to start F5 set each instrument from Mute to Back to normal,
on the Bar you want the Riff to stop F5 Mute each instrument.
You can start them sooner if you want some lead in notes and edit them in your DAW, or end later for tails notes or to fade out.

Assign the same instrument to all 7 tracks in the RT picker window.

To preview the Riffs, Solo the Audio Track (if not showing click Audio at the bottom right of the mixer)
right click the solo button on track 1 > play
right click the solo on track 1 then 2 > play
right click the solo on track 2 then 3 > play
etc...

When you have found the one that fits best drag that track to DROP WAV
to render just the riff bars, select the bars then drag that track to DROP WAV
Still can't find one ? Generate Play again.

You can Import the Exported Riff back into your original Biab song.


Attached Files (Click to download or enlarge) (Only available when you are logged in)
BB_MultiRiff_F5.png (185.3 KB, 213 downloads)
BB_MultiRiff_Set_Tracks.png (44.49 KB, 211 downloads)